Re: AGL / NFS

[Stephane Desneux <stephane.desneux@xxxxxxx>]

Exactly.

And even if there's no TFTP (or no ethernet driver in uboot), it's still
possible to cheat: for example, you can build with agl-netboot feature and
you'll get a kernel image, a dtb, an initramfs and a rootfs. You can put
everything but the rootfs on a sdcard and boot from it 'as usual' then let the
initramfs mount the rootfs through NBD: set the nbd.xxx variables accordingly in
the kernel command line and don't forget to serve your rootfs ext4 file with a
nbd server).

Please keep us posted on your progress: I'm sure many people would be interested
with this netboot feature :)

HTH
---
Stephane Desneux - CTO - IoT.bzh
stephane.desneux@xxxxxxx - www.iot.bzh

On 30/09/2019 22:20, Jan-Simon Moeller wrote:
> Does the u-boot of your board do tftp? If yes, the answer is yes.
> 
> best,
> js
> 
> Vahid Gharaee <vgharaee@xxxxxxxxx <mailto:vgharaee@xxxxxxxxx>> schrieb am Mo.,
> 30. Sep. 2019, 11:21:
> 
>     Dear Stephane, Community,
> 
>     does the netboot works for imx6 ?
> 
>     kind regards
>     vahid
> 
> 
>     On Sat, Aug 3, 2019 at 12:32 PM Vahid Gharaee <vgharaee@xxxxxxxxx
>     <mailto:vgharaee@xxxxxxxxx>> wrote:
> 
> 
>         Thank you very much for your prompt reply.
>         i'm gonna try netboot
>         vahid
> 
>         On Sat, Aug 3, 2019 at 12:18 PM Stephane Desneux
>         <stephane.desneux@xxxxxxx> wrote:
> 
>             Hi Vahid,
> 
>             No, you can't use NFS because extended attributes are not handled at
>             filesystem
>             level but they are required to use SMACK.
> 
>             That's why we added support for netboot through NBD (network block
>             device at
>             kernel level, filesystem agnostic).
> 
>             The goal is to have the rootfs mounted on a device named /dev/nbd0.
>             On server
>             side, a daemon is responsible for pushing the required blocks.
> 
>             The chain is something like this:
> 
>                 [--------- target ----------]                        [-----
>             server ------]
> 
>             ext4 FS -> block device (nbd0) -> nbd-client --(tcp)--> nbd-server
>             -> ext4 image
> 
> 
>             To enable the NBD feature, you'll have to add the 'agl-netboot'
>             feature at
>             aglsetup time.
> 
>             Check this README:
> 
>             https://git.automotivelinux.org/AGL/meta-agl/tree/meta-netboot/README
> 
>             You can also find an example script to be run on server side (it's
>             suited for
>             the AGL docker container which is a debian):
> 
>             https://git.automotivelinux.org/AGL/docker-worker-generator/tree/INSTALL/tools/scripts_netboot/run_xnbd_server
> 
>             Hope this helps.
>             ---
>             Stephane Desneux - CTO - IoT.bzh
>             stephane.desneux@xxxxxxx - www.iot.bzh
> 
>             On 03/08/2019 09:16, Vahid Gharaee wrote:
>             > Dear all,
>             >
>             > Could anyone tell me if it's possible to run AGL over NFS?
>             > I mean, because SMACK is used, I could not use NFS.
>             > I need NFS to debug more easily.
>             >
>             > Thank you in advanced.
>             > Vahid 
>             >
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